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IBM runs the US Open infrastructure on a private cloud that is geo-distributed across data centers in Boulder, CO; St. Louis, MO; and Raleigh, NC. This interface allows IBM personnel to monitor the resource usage at each data center, so they can redistribute the load if necessary.
This interface allows IBMers on-site at the Open to provision and configure new servers in any of the three private cloud data centers IBM operates for the event.
Here's the main menu for the US Open in-house information system.